Hydraulic pump



(No Modem 2 sheets-sheen 1.

W. GLARKSON.

HYDRAULIC PUMP.

Patented Deo. 15,1896.

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' Arm/Wgr. l

(No Model.) l 2 sheets-shee 2A W. GLARKSON.

HYDRAULIC PUMP. No. 572,964. Patented Deo. 15,1896.

, ATTORNEY.

UNITED STATES PATENT EEICE.

\VllililAl\l CLARKSON, OF CLEBURNE, TEXAS.

lHYDRAULIC PUMP SPECIFICATION it'orming` part of Letters Patent No. 572,964, vdated December 15, `1896. Appiimion flied september 10.1896. semina 605,355. ci@ model.)

To all whom t may concern.-

Be it known thatI, ,WILLIAM CLARKsoN, a citizen of the United-States, residing at Cleburne, in thecountyiof. Johnson and Stateof Texas, have invented certain new and useful Improvements in Hydraulic Pumps; and I do hereby declare the following-to be af ull, clear, and exact description of the invention, such as Will enable others skilled inthe art to which it appertains to makeand usethe same.

My invention relates to pumps, and more particularly to myimprovedsystem of pumping shown and described in two applications l (Not shown.) Fig. 2 is a like view 'showingl a modification of my invention.

Referring more particularly to the drawings, A denotes a plunger having a series of weights B secured toits upper end. C dcnotes a collar rigidly secured to the upper end of said plunger below the weights.

Ddenotes a cylinder open at its upper end A and provided with a stufling-box E. F denotes asafety-valve located at the upper end of said cylinder and connected by a chain G to said collar. II denotes an open yoke having a base J cast integral with said cylinder. K denotes a sucker-rod secured to the lower end of said plunger and extending through stuing-boxes 7c. 7.; in said yoke to the well or water supply.

L denotes the supply-pipe leading to a suitable tank, (not shown,) and L denotes a branch of the supply-pipe connected to a feed-pump hereinafter described.

M denotes a pressure-pipe connecting a driving-ram (not shown) Aand providedl with a feed-pipe O, hereinafter described.

The feed-pump consists of a cylinder N,

i open :at its upper end and `provided with a stuffing-box. y i

N denotes a standard secured to cylinder D., in which cylinder N is mounted. The lower end of said cylindercommunicates with the pipe L through a check-valve n. O dcnotes a feed-pipe connecting the lower end of saidjcylinder with the pressure-pipe M. P denotes a safety-valve insa-id pipe. Q denotes a plunger for said cylinder, extending upward above said cylinder and passing through a perforation in the collar C.

R denotes a nut secured to the stem of the plunger'below'the collar C. The position of said nut is such that the collar will not come in contact with it so long as the plunger A performs only its normal downstroke.

S denotes a coiled spring surrounding the plunger-stem, its lower end bearing on the 4 stuffing-box of cylinder N land its upper end bearing on a nut T, secured to the plungerstem.

lvhcn the pressure-pipe and cylinder D have the requisite supply of water,` the feedpump is not brought into play, and itis only when there is insufficient Water in said pipe and cylinder that the feed-pump automatically supplies the leakage orwaste by forcing in water from the pipe L.

The operation is as follows: There being insufficient water supply in the-pressure-pipe and cylinder the plungerAon its downstroke will descend into the `cylinder D below its normal position. This will cause the collar C to strike the nut R and force down the yplunger in cylinder N, forcing the Water in the latter through the pipe O into the pipe M, the safety-valve P yielding to this pressure, while the check-valve fnl prevents backiow into the pipe L'.' Upon the completion of downstroke of plunger in cylinder N it is forced back to its normal position by the coiled spring S. n

It should be understood that the safetyvalve P is sufficiently Weighted toresist the'v pressure from the head of wat-er in: the Watertank, while it will yield to the greater pressure from the feed-pump. y acts as a check-valve to prevent' the Water in pipe M from passing into the-cylinder In the modificationshown in Fig. 2 the feed- Said valve also IOO pump consists oi a cylinder l, provided with a piston 2, having a rod 3, extending above said cylinder, secured to a collar 4 on the pumping-ram plunger. 5 denotes a valve seated in said piston and provided with a depending stem 6, on which is arranged a compressed or coiled spring 7. Said spring abuts against the lower surface of said piston,- and its lower end is secured to or abuts against a nut 8, secured to the valve-stem 6,' and serves to hold said valve in its seat under normal conditions, as hereinafter described. The lower end of said cylinder is connected to a pipe 9, which is a branch of the supply-pipe, and the upper end .ofv the cylindertis connectedl to a pipe 10, which communicates with the pressure-pipe through a check-valve 1.1.

The supply-pipe keeps a constant suppl y of water in the lower1 end of the feed-pump cylinder, and under normal yconditions this Water is prevented vfrom passing through the valve 5 by the expansion of the coiled spring holding it in its seat. Should the water in the pumping-ram cylinder become insufficient by leakage or waste in the pressure-pipe, it would cause the pumping-ram plunger which carries the collar 4 to descend below its normal position, lowering'piston 2 until the valvestem was forced down in contact with the bottom of cylinder 1,lthereby compressing spring 7 and releasing the valve from its seat, when the water in the lower end of the cylinder will flow through into its upper end and be forced into the pressure-pipe upon the upstrol'ie of the piston.

Itis evident that the feed-pump shown-in Fig. l' utilizes the downstroke of plunger A to force Waterinto the pressure-pipe, while the construction shown in Fig. 2 utilizes the upstroke of said plunger for this purpose. In the former instance water is supplied to the pressure-pipe while the pressure in said i e is ,low-or onl Y a "ravit ressure while' D e l tween said pressure-pipe and feed-pump, and

means for automatically operating said feedpump by said pumping-rarnplunger to supply Waste or leakage in the pressure-pipe, substantially as-shown and described.

2. In a compound pump, the combination with a pumping-ram having a gravitating plunger-actuated by water under pressure, of a feed-pump for the pressure-pipe having a piston connected to and operated by the pumping-ram plunger, a valve seated in said pistonhaving a depending stem and a spring mounted upon said stern which normally retains said valve'in its seat, a lpipe connecting the lower end of said feed-pump with the supply-pipe, and a pipe connecting the upper end of said pump with the pressure-pipe;

substantially as shown and described.

In testimony whereof I affix my signature in presence of two witnesses WILLIAM '(ILARKSON. IVitnesses:

R. G. IIALL, O. J. LOGAN. 

